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Nanobelt-carbon nanotube cross-junction solar cells

机译:纳米带-碳纳米管交叉结太阳能电池

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摘要

Nanostructures such as carbon nanotubes (CNTs) and semiconducting nanowires are promising candidates for developing next-generation photovoltaics. Here, we report solar cells using individual single-walled or double-walled CNTs and CdSe nanobelts arranged in simple cross-junction configurations. The CNT and CdSe nanobelts form reliable line contacts at their intersections, resulting in efficient heterojunction solar cells with power conversion efficiencies up to 1.87% and stable performance in air over long periods. Both semiconducting and metallic CNTs can form solar cells with CdSe nanobelts, with similar open-circuit voltages but different short-circuit current densities. We can integrate multiple CNTs in parallel with a single nanobelt to construct an array of cross-junction solar cells simultaneously, with scaled current output, indicating the possibility of parallel device connection and large-scale production. Our results show the potential of utilizing one-dimensional nanostructures to design and fabricate high performance photovoltaic devices with well-defined and scalable structures.
机译:碳纳米管(CNT)和半导体纳米线等纳米结构有望成为开发下一代光伏技术的候选材料。在这里,我们报道了使用单个单壁或双壁CNT和CdSe纳米带以简单的交叉结结构排列的太阳能电池。 CNT和CdSe纳米带在其相交处形成可靠的线接触,从而产生高效的异质结太阳能电池,其功率转换效率高达1.87%,并在空气中长期保持稳定的性能。半导体和金属CNT均可形成具有CdSe纳米带的太阳能电池,其开路电压相似,但短路电流密度不同。我们可以将多个CNT与单个纳米带并联集成,以同时构建按比例输出电流的交叉结太阳能电池阵列,这表明了并联设备连接和大规模生产的可能性。我们的结果表明,利用一维纳米结构设计和制造具有定义明确和可扩展结构的高性能光伏器件的潜力。

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  • 来源
    《Energy & environmental science》 |2012年第3期|p.6119-6125|共7页
  • 作者单位

    Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China;

    Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R China;

    Beijing National Laboratory for Molecular Sciences, National Laboratory of Rare Earth Material Chemistry and Application, Key Laboratory for the Physics and Chemistry of Nanodevices, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China;

    National Center for Nanoscience and Technology, 11 Beiyitiao Street, Zhongguancun, Beijing, 100190, P. R. China;

    Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China;

    Key Laboratory for Advanced Materials Processing Technology and Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, P. R. China;

    Key Laboratory for Advanced Materials Processing Technology and Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, P. R. China;

    Key Laboratory for Advanced Materials Processing Technology and Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, P. R. China;

    Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China;

    Key Laboratory for Advanced Materials Processing Technology and Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, P. R. China;

    Key Laboratory for Advanced Materials Processing Technology and Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, P. R. China;

    Key Laboratory for Advanced Materials Processing Technology and Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, P. R. China;

    Key Laboratory for Advanced Materials Processing Technology and Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, P. R. China;

    Beijing National Laboratory for Molecular Sciences, National Laboratory of Rare Earth Material Chemistry and Application, Key Laboratory for the Physics and Chemistry of Nanodevices, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China;

    National Center for Nanoscience and Technology, 11 Beiyitiao Street, Zhongguancun, Beijing, 100190, P. R. China;

    Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R China;

    Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R China;

    Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China;

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